transform_time_stretch() [1/2]

template<OperationReadyData DataType>

DataType MayaFlux::Yantra::transform_time_stretch	(	DataType &	input,
		double	stretch_factor
	)

Simple time stretching via resampling using C++20 ranges (IN-PLACE)

Template Parameters

DataType

OperationReadyData type

Parameters

input	Input data - WILL BE MODIFIED
stretch_factor	Stretch ratio (>1.0 = slower, <1.0 = faster)

Returns

Time-stretched data

Definition at line 106 of file TemporalHelper.hpp.

{
    if (stretch_factor == 1.0) {
        return input;
    }
 
    auto [target_data, structure_info] = OperationHelper::extract_structured_double(input);
 
    std::vector<std::vector<double>> result(target_data.size());
 
    for (size_t i = 0; i < target_data.size(); ++i) {
        auto new_size = static_cast<size_t>(target_data[i].size() * stretch_factor);
        result[i].resize(new_size);
        interpolate(target_data[i], result[i], new_size);
    }
 
    return OperationHelper::reconstruct_from_double<DataType>(result, structure_info);
}

References MayaFlux::Yantra::OperationHelper::extract_structured_double(), and interpolate().

Referenced by MayaFlux::Yantra::TemporalTransformer< InputType, OutputType >::transform_implementation().

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